Critical Cooling Rate for the Glass Formation of Ferromagnetic Fe_(80)P_(13)C_7 Alloy  

作　　者：Kai XU Yan WANG Jinfeng LI Qiang LI 

机构地区：[1]School of Physics Science and Technology, Xinjiang University [2]State Key Laboratory of Powder Metallurgy, Central South University

出　　处：《Acta Metallurgica Sinica(English Letters)》2013年第1期56-62,共7页金属学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 50861007);the Project of Supporting Xinjiang Uyghur Autonomous Region by Science and Technology (No. 201191203);the Opening Subject from State Key Laboratory of Powder Metallurgy in Central South University

摘　　要：In this paper the critical cooling rate, Rc, for the glass formation of Fe80P13C7 alloy has been determined using both Uhlmann＇s and Barandiaran-Colmenero＇s method. In Uhlmann＇s method, all kinds of the expres-sions of △G^l-s （T） and η/（T） determined using the different modes and methods had been investigated. It is indicated that the Rc for the glass formation of FesoP13C7 alloy can be estimated to be 349 K/s by Uhlmann＇s method based on the appropriate expressions of △G^l-s（T） and η/（T）. The calculated result accords with our experimental result. The Rc for the glass formation of Fe80P13C7 alloy has also been determined to be 0.49 K/s using Barandiaran-Colmenero＇s method. This resultant Rc is unreasonable low and it indicates that Barandiaran-Colmenero＇s method does not suit to Fe-based alloy.In this paper the critical cooling rate, Rc, for the glass formation of Fe80P13C7 alloy has been determined using both Uhlmann＇s and Barandiaran-Colmenero＇s method. In Uhlmann＇s method, all kinds of the expres-sions of △G^l-s （T） and η/（T） determined using the different modes and methods had been investigated. It is indicated that the Rc for the glass formation of FesoP13C7 alloy can be estimated to be 349 K/s by Uhlmann＇s method based on the appropriate expressions of △G^l-s（T） and η/（T）. The calculated result accords with our experimental result. The Rc for the glass formation of Fe80P13C7 alloy has also been determined to be 0.49 K/s using Barandiaran-Colmenero＇s method. This resultant Rc is unreasonable low and it indicates that Barandiaran-Colmenero＇s method does not suit to Fe-based alloy.

关 键 词：Glass formation ability Critical cooling rate Fe80P13C7 alloy 

分 类 号：TG141[一般工业技术—材料科学与工程]